Improvement in glass-melting pots



R. RICHARDSON.

Glass-Melting Pots.

Patented June 30,1874.,

S E S S E N n w UNITED STATES PATENT EETOE,

ROBERT RICHARDSON, OF BROOKLYN, NEY YORK.

IMPROVEMENT IN GLASS-MELTING POTS.

Specification forming part of Letters Patent N0. 152,687, dated June`30, 1874; application filed Mas7 29, 1874. Y

To all whom it may concern:

Be it known that I, ROBERT RICHARDSON, of Brooklyn, Kings county, NewYork, have invented a new and Improved Glass-Melting Pot, of whichthe'following is a specification:

The invention con sis ts in improving the construction of glass-meltingpots, as hereinafter described, and pointed out in the claim.

In the accompanying drawing, Figures l and 2 are sectional elevations ofmy improved pot, taken on the lines .r .r and y y of Fig. 3; and Fig. 3is a plan view. Y

Commonly these pots are wholly closed to the heat, so that it only actsthrough the walls 5 but in some cases they have been made with opentops. In the latter case the carbon particles and other matters fallingfrom the upper portion of the furnace and the tlue into' the glass giveit a darkgreen color and spoil it for ne goods; hence, for all exceptthe lowest grades of goods, the pots have had to be closed at the top.The closed pots are objectionable, because they resist the heat, so thatit takes about twenty-six hours to heat the glass to the same degreethat it can be heated in about half the time in an Open pot.

I therefore propose to make the pots A with a cover, B, about the sameas the ordinary covered pots, but with two or more large openings, C, atthe junction of the cover with thel sides of the pot, or thereabout, andwith raised portions D of the cover projecting over said openings, so astO prevent the falling of any matters from the top of the furnace andthe ilue into the pot. l also propose to make a small opening, E,through the top of the wall F, surrounding the mouth Gr ofthe pot, topermit of the escape back into the furnace of any portion of the heatcurrents that may, in consequence of draft through Openings C, tend tocome out at the opening H in the furnace-wall I, through which the glassistaken from the pot. The pot will be arranged in the furnace in allrespects the saine as the Ordinary pots. Vith these open-ings throughthe pot, the action Of the heat on the glass is about as quick as with apot wholly open at the top.

Having thus described 1n yinvention, I claim as new and desire to secureby Letters Patent- A glass-.melting pot having a slot or opening, E, inthe top of wall F of mouth Gr, as and for the purpose specified.

ROBT. RICHARDSON.

IVitne'sses:

T. B. MOSHER, ALEX. F. ROBERTS.

